Double-click for New Todo

[cldjr1]

I find myself double-clicking in the UI expecting a new todo to be created, so it seems like a natural feature to request.

• My list is auto-sorted by priority, so double-clicking in the empty area next to priority A, I would expect a new todo defaulting to priority A to open.
• Double-clicking at the bottom of the list, I would expect a blank new todo item to open.
• Double-clicking on an attribute anywhere in the ui, I would expect a new todo with that attribute to open.